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Surface Modification of a MOF-based Catalyst with Lewis Metal Salts for Improved Catalytic Activity in the Fixation of CO2 into Polymers

Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea
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Catalysts 2019, 9(11), 892; https://doi.org/10.3390/catal9110892
Received: 10 September 2019 / Revised: 17 October 2019 / Accepted: 23 October 2019 / Published: 26 October 2019
(This article belongs to the Special Issue MOFs for Advanced Applications)
The catalyst zinc glutarate (ZnGA) is widely used in the industry for the alternating copolymerization of CO2 with epoxides. However, the activity of this heterogeneous catalyst is restricted to the outer surface of its particles. Consequently, in the current study, to increase the number of active surface metal centers, ZnGA was treated with diverse metal salts to form heterogeneous, surface-modified ZnGA-Metal chloride (ZnGA-M) composite catalysts. These catalysts were found to be highly active for the copolymerization of CO2 and propylene oxide. Among the different metal salts, the catalysts treated with ZnCl2 (ZnGA-Zn) and FeCl3 (ZnGA-Fe) exhibited ~38% and ~25% increased productivities, respectively, compared to untreated ZnGA catalysts. In addition, these surface-modified catalysts are capable of producing high-molecular-weight polymers; thus, this simple and industrially viable surface modification method is beneficial from an environmental and industrial perspective. View Full-Text
Keywords: heterogeneous catalysis; metal organic framework; surface modification; Zinc glutarate; CO2 fixation; polycarbonate heterogeneous catalysis; metal organic framework; surface modification; Zinc glutarate; CO2 fixation; polycarbonate
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MDPI and ACS Style

Padmanaban, S.; Yoon, S. Surface Modification of a MOF-based Catalyst with Lewis Metal Salts for Improved Catalytic Activity in the Fixation of CO2 into Polymers. Catalysts 2019, 9, 892.

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